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A Comparison between Virtual Private LAN Service (VPLS)and P2MP IP-only LAN Service (IPLS)

Yousefi, Dariush | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 47226 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Ajorloo, Hossein
  7. Abstract:
  8. Today Ethernet is the predominant technology for implementing Local Area Networks. Its privileges encourage service providers to extend Ethernet from Local Area Networks to Metropolitan Area Networks or even Wide Area Networks. Ethernet benefits such as low operational costs, well interoperability, plug-n-paly characteristic and rapid provisioning on demand make Ethernet ideal for Metropolitan Area Networks.But Ethernet by itself has some weakness like flat structure that makes it unfit for use in Metropolitan Area Networks. A suitable solution for taking advantages of Ethernet benefits in service provider network is using Ethernet in access network and applying multi-point to multi-point LAN services over provider network to connect Ethernet access networks and making them act as a single LAN. Virtual Private LAN Service (VPLS) and IP only LAN Service (IPLS) are two Layer 2 Virtual Private Networks technology that can be used to deploy multi-pint to multi-point LAN service over service provider network. VPLS and IPLS do the same function by different methods. VPLS is designed for Provider Edge devices capable of Ethernet bridging function within data plane while IPLS is designed for Provider Edge devices with primary function of being IP Routers. In this document we compare VPLS and IPLS in different aspects. Also VPLS and IPLS Pseudo Wires are simulated. Simulation results show that IPLS Encapsulation is more efficient than VPLS Encapsulation. By modifying the Ethernet header of customer IP packets, thus it delivers better bandwidth saving inside provider network but on the other hand it cannot offer a complete End to End Ethernet service over provider network
  9. Keywords:
  10. Ethernet ; Coding ; Metropolitan Area Network ; Virtual Private Networks ; Virtual Point-to-Point Links ; Internet Protocol Only LAN Service ; Network Layer Two

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